Wood-heel-turning machine



E. w. BAILLY WOOD HEEL TURNING MACHINE Filed April 24, 1923 2 SheetS-Sheet l E. W. BAILLY WOOD HEEL TURNING MACHINE Filed April 24 1923 2 Sheets-Sheet 2 Patented Oct. 30, 1923.

UNITED STATI-3s' y A witze PATENT-ferries.

EMILE W. BAILLY, F EAVEBHILL, MASSACHUSETTS.

WOOD-HEEL-TURNING MACHINE.

Application led April 24, 1923. Serial Io. 634,279.

' To all wliom t may concern:

' tion.

This invention relates to wood heel turning machines, or machines for shaping the sides and back of a wood heel blank and more particularly to means employed in connection therewith for varying the inclination of the heel blank holder with relation to the axis of the cutter as it is swung about the cutter, in performing this operation.

In this class of machines, it is customary to swing the blank holder or jack horizontally about a vertical pivot located adjacent the cutter, which is rotated about a vertical axis, and at the same time to swing the jack upward about a horizontal pivot located adjacent the vertical pivot.

To accomplish this result, it has -been the practice to provide an upwardly inclined cam or track, on which the jack rests at a point remote from its pivots, and which acts to swing the jack upwardly as it is swung horizontally from its initial to its final position, and, in order to form heels of varying pitch, it has been customary to vary the inclination of the track.

While the results which may be thus secured are suiciently accurate to enable certain ordinary types of heels to besatisfactorily formed, such a machine cannot be adjusted to form heels of extreme height and pitch, or heels having nopitch or a reverse pitch, as where the top is larger than'the base. Moreover, said machines are not only incapable of adaptation to the formation of the extreme types of heels above indicated, butthey are incapable of the ready and accurate adjustment which is desired or necessary to the formation of heels of intermediate types.

The objects of my invention are to provide a machine of the type indicated with means whereby the blank holder may be swung in a vertical plane, as it is moved horizontally, together with means whereby these movements may be readily and accurately varied to enable the formatlon of heels of the widely varying types demanded by the trade,

I accomplish these objects in the manner hereinafter described and as illustrated in the accompanying drawing in which:

Fig. 1 1s a lan view of the essential portions of a, hee turning machine embodying my invention.

Fig. 2 is a vertical sectional view, taken approximately at line 2-2 of Fig. 1, showinthe j ack in its extreme position.

y 1g. 3 1s a detail sectional view at line 3 3 of Fig. 1 showing the jack in its initial osition.

other forms of heel turning machines than that herein shown, it is rimarily designed for use in connection wit the specific form shown. Y

This form of machine comprises a pair of rotary cutters 2 and 4 mounted to rotate in the frame 5 about vertical axes in opposite directions. The base 6 of the jack is connected by a horizontal pivot 7, disposed at right angles thereto, to a bracket 8, which is mounted on a vertical pivot bolt 10, adjacent the pivot 7 and in the end of a link 12, the latter being mountedto swing about a, vertical pivot 14 in a bracket 15, midway between the cutters, so that the heel blank may be moved into operative relation with each cutter successively to finish the opposite sides of the heel. During this operation, a cam 11, which is mounted on the jack directly beneath the blank holding face, and which corresponds in shape to the heel base, is held in engagement with a fixed guide 13 mounted on the frame, so that there is a slight lateral movement of the pivot 10 during the horizontal swinging movement of the jack, although this movement is relatively so sli ht that the horizontal movement of the jack may be considered as being about a practically fixed axis.

According to my invention, I provide a pair of angular brackets, each of which comprises an arm portion 16 and a base portion 18, each base portion being attached to a metal plate 20, rigid with the frame, by means of a screw bolt 22 which passes loosely through a longitudinal slot 18a therein and is threaded into the plate 20. A

pair of bolts 23 and 24 are threaded in each le my invention may be applicable to plate by the bolt 22, its angular position will y depend on the relative position of the bolts 23 and 24 in the bracket and this position may be varied by screwing one of said bolts inward and the other outward. To provide for vertical adjustment of the brackets, a bolt 425 is threaded in a lug 20a at the lower end of plate 20, in position to engage a foot 18b on the lower end of each bracket, a Wide bearing being provided, so that the screw 25 will engage the bracket in the various angular positions to which it may be adjusted. A track, or cam 26, is securely bolted to the arm portions 16 of the brackets, said track being preferably formed of a rigid stripx of metal ,arranged with one edge uppermost, to provide a bearing face, and being formed to provide two curved end portions 26a and an intermediate connecting portion 26", which is arranged in tangential relation to the curved portions, the points where the curved portions merge with the connecting portion, being approximately in front of the cutters, respectively. The centers of said curved portions are not, however, at the centers about which the jack is swung when the cutters are operating on the blank, but are eccentric thereto, as will be explained. In practice, the brackets, when adjusted for medium types of heels, will be so adjusted that the upper edge of the track inclines upward from the plate 20 at a small angle to the horizontal, usually at an angle of from 8 to 10, which angle is however, varied when necessary, as will also be explained. A foot 30, consisting of a fiat straight bar is connected at one end by a horizontal pivot 32 to the under side of the body of the jack and an adjusting screw 34 is threaded in the jack body in a nearly vertical position and has a loose swivel connection with the opposite end of said foot, so that the latter may be readily adjusted to various angular positions, in practice from a position in which the underside of the foot is nearly horizontal to an angle of approximately 30o therefrom. Any suitable means for clamping the heel blank to the base may be employed, as the clamping arm 36 and screw 38 show.

n operating the machine, the jack is swung to the rear, in the full line position of Fig. 1, in which position the cutter will engage the side of the heel at the breast and the foot 30 will rest on the lowest portion of the track 26 at a point preferably between the pivot 32 of the foot and the middle thereof, as indicated in Fig. 3. The jack will then be swung towards the front about the pivot 10, as an approximate center, from the initial position shown in full lines in Fig. 1, to the dotted line position therein,

or the position of Fig. 2. The center about which the curved position 26a of the track is formed, is located eccentrically to this approxlmate center, and its location is such ly perpendicular to the straight portion 26" of the track, the point at which the track engages the footwill be at a constantly increasing distance from the pivot 10 about which the jack swings. Consequently, at the end of this movement, the point of this engagement will be in much closer proximit-y to the adjustable end of the track than at the starting point, as shown in Fig. 1. Assuming that the partsare so adjusted that the upper edge of the track inclines upward from the rear of the machine, and that the foot 30 is adjusted, so that its under face is inclined downward from the horizontal, as indicated in full lines in Fig. 2, it follows that, as the jack is swung'from the full line position of Fig. 1 to the full line position of F ig.'2, it will not only be swung upward to an extent about the pivot 7, on account of the upward inclination of the track, but it will also be swung upward to a possibly even greater extent by reason of the relatively lower point of the engagement of the jack with the track, which constantly increases as the jack approaches its extreme position. It follows that the more remote the point of engagement of the track with the foot from the center on which the jack -is swung, the greater will be the extent to which the jack will be swung upward; on its pivot 7, and it also follows that the greater the downward inclination of the surface of the foot from the horizontal, the greater will be the extent to which the jack will be swung upward as it is swung forward to the point at which the cutter engages the middle of the back of the heel bank. Consequently, if the pitch of the heel at the back is to be increased, the foot will be adjusted downward, and vice versa.

Under ordinary conditions of use, or in the manufacture of the more common forms of heels, the desired variation in pitch may be secured by merely adjusting the screw 34, assuming that the track is adjusted at a slight upward inclination, but if the desired form cannot be secured by means of this adjustment, then the range of adjustment, which may be secured by adjusting the foot on the jack, may be changed by an adjustment of the inclination of the track. If heels which are abnormally high and, have an extreme pitch, are to be manufactured, then the upper bolts 23 will be screwed back and the lower bolts 24 will be screwed in and if in this connection or for any reason the initial position or inclination of the jack is required to be changed, as will be frequently necessary, the Vertical sol position of the track may be changed by oosening the bolts 22 and changing the position of the screws 25, so as to raise or lower the brackets.

If the heels havin a larger top than base are required, so t at an opposite pitch from the normal pitch is necessary, they may be formed by adjusting the track so that it inclines downward from the rear, as

indicated in the dotted line position of Fig. 2, and in such case, the foot 30 will be also adjusted to a position which is horizontal, or nearl so, as may be required.

It wil therefore be apparent that the maf chine may be readily adjusted to form a heel of any pitch which may be desired.

As the foot 30 slides longitudinally on the track as it is swung transversely thereon, the wear on the foot will be distributed so that there will be no tendency to wear a groove therein, as would be the case if the entire engagement were at one point.

The operation in connection with each cutter is identical.

I claim:

l. In a heel turning machine, a cutter mounted to rotate about a vertical axis, a heel blank holder mounted at one end to swing horizontally and vertically about vertical and horizontal pivots located adjacent said axis and having a longitudinally extending supporting face arranged to decline from the horizontal as it extends from said pivots, a track arranged to permit said face to rest thereon and support said holder as it is swung horizontally from its initial to its extreme position, said track extending in divergent lrelation with the path of the point on said face which engages the track when the holder is in its initial position, to vary the point of engagement of the track with said face as the holder is moved horizout-ally, thereby to cause the horizontal and vertical swinging movements of the holder to be made in a predetermined ratio.

2. In a heel turning machine, a cutter mounted to rotate about a vertical axis, a blank holder mounted at one end to swing horizontally and vertically about vertical and horizontal pivots located adjacent said axis, a foot extending longitudinally of said holder and having a face on its under side, means permitting adjustment of said foot to different positions of inclination in which its face declines from the end thereof adjacent said pivots, and a track disposed in position to permit said face to rest thereon and support said holder as it is swung horizontally between its initial and its extreme positions, said track being arranged to extend divergently with relation to an -arc having said vertical pivot as its center.

3.1m a heel turning machine, a cutter mounted to rotate about a vertical axis, a blank holder mounted at one @ad t0 swing horizontally and vertically. about vertical and horizontal pivots located adjacent said axis, a foot pivotall connected at one end to the under side o said holder, to swing verticall and having a flat face on its under side, sai foot extendin towards the opposite en d of the holder m its pivoted end and having means engaging the holder to vary its angular position on its pivot, to permit its face -to be held in diii'erent positions of declination from its pivot, and a curved track disposed beneath the holder to permit said face to rest thereon and support the holder as it is swung horizontally between its initial and extreme positions, said track extending divergently with relation to an arc having said vertical pivot as its center, so that the distance from said center, to its point of engagement with said foot, increases in a predetermined ratio to the distance which the holder is moved from its initial position.

4. In a heel turning machine, a .cutter mounted to rotate about a vertical axis, a blank holder mounted at one end to swing horizontally and vertically about vertical and horizontal pivots located adjacent said axis, a bar pivotall connected at one end to the underside o said holder, to swing vertically, an adjusting screw threaded in said holder remote from its pivots and having a swivel connection with the opposite end portion of said bar, to vary the inclination thereof and a curved track extending divergently with relation to an archaving said vertical pivot as a center and arranged to be engaged by the under side of said bar at points which increase in distance from said vertical pivot as the holder is moved from its initial to its extreme position.

5. In a heel turning machine, a cutter mounted to rotate about a vertical axis, a blank holder mounted at one end to swin horizontally and vertically about vertica andhorizontal pivots located adjacent said axis, and having a supporting face at its under side arranged to decline from said pivots, means to vary the inclination of said face, and a curved track arranged to be engaged by said face to support the holder, said track being formed on a curve having its center eccentric to the center of said vertical pivot and so arranged that the distance from said pivot to the point of con. tact with said face constantly increases as the holder is swung about said pivot from its initial to its final position.

6. In a heel turning machine, a cutter mounted to vrotate about a, vertical axis, a blank holder mounted at one end to swing horizontally and vertically about vertical and horizontal pivots located adjacent said axis., a track for supporting said holder dui-mg' its horizontal Swinging movement,

mounted to rotate about a vertical axis, a` blank holder mounted at one end to swing horizontally and vertically about vertical and horizontal pivots located ad'acent said axis, a track for supporting said older during its horizontal swinging movement, to cause a predetermined vertical swinging movement thereof, an angular bracket for supporting said track, comprising a base portion and an arm portion on which the track is directly supported, an upright, aclamping screw engaging said base portion and threaded in sald upright, a pair of set screws threaded in said base portion above and below said clamping screw, respectively, and engaging said upright to vary the inclination of said bracket and correspondingily vary the inclination of said track from the horizontal, and a .vertically disposed screw arranged to engage said bracket to adjust the same vertically.

In testimony whereof I have signed my name to this specification.

EMILE W. BAILLY. 

